The following lines were added (+) and removed (-):
$qString = $_SERVER['QUERY_STRING']; <nowiki>$qString = $_SERVER['QUERY_STRING'];</nowiki> $qString = preg_replace('#[^a-zA-Z0-9_-]#', '', $qString); <nowiki>$qString = preg_replace('#[^a-zA-Z0-9_-]#', '', $qString);</nowiki>